Lets talk about the L5P for a second. Recently I have been shown the CEL and the Idash calls out a code for the MAP sensor along with a reduced engine power msg but doesn't set a code for that. I could clear the check engine but the "Power will be reduced in 175 miles" msg would persist. I spoke with Banks tech thinking that the harness from the Derringer to the Map sensor was or the connector to Map might be the problem I was told to disconnect the Banks connector form the Map and connect the OEM connector and see if the code returned. What happened was and almost immediate it went to limp and 15 miles an hour max. The Idash now thru another code for the first time, P0191 which is the fuel rail pressure sensor A circuit not valid. the sensor is a duel unit. I replaced the sensor and everybody is happy. The hard part was I don't trust the Chinisium stuff or Amazon so to the dealer I went and left with a new OEM sensor and 250.00 dollars lighter. And after all that it was manufactured in Thailand. Lord have mercy